Now technology itself has become the great general manager. It can monitor performance closely, provide instant feed back, even create reports and presentations. Moreover, skilled teams are increasingly self-managed. That leaves people with general management skills in a very vulnerable position. In the past their networks and abilities were built up in one companyâ€”but as tenure with a single company decreases, people lose the opportunity to develop deep knowledge that other firms might value. Plus, thanks to the internet and search engines, everyone now knows or can know something about everything. There is little competitive advantage in being a jack-of-all-trades when your main competitor might be Wikipedia.